package com.qk.management.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.collection.CollectionUtil;
import cn.hutool.core.util.DesensitizedUtil;
import cn.hutool.core.util.ObjectUtil;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qk.common.PageResult;

import com.qk.common.enums.ParamEnum;
import com.qk.common.exception.CommonException;
import com.qk.common.util.JwtUtils;
import com.qk.domain.user.UserDO;
import com.qk.dto.user.UserDTO;
import com.qk.dto.user.UserLoginDTO;
import com.qk.entity.Role;
import com.qk.entity.User;
import com.qk.management.mapper.RoleMapper;
import com.qk.management.mapper.UserMapper;
import com.qk.management.service.UserService;
import com.qk.vo.user.UserLoginVO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.util.ObjectUtils;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;

/**
 * @author 李智勇
 * @data 2025/10/8 11:34
 */
@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private RoleMapper roleMapper;
    private static final String DEFAULT_PASSWORD_SUFIX = "123";
    private static final Integer USER_STATUS_UNNORMAL = 0;
    @Override
    public UserLoginVO login(UserLoginDTO dto) {
        boolean hasNull = BeanUtil.hasNullField(dto);
        if (hasNull){
            CommonException.throwCommonException(ParamEnum.PARAM_ERROR);
        }
        User dbUser = userMapper.selectByUsername(dto.getUsername());
        if (Objects.isNull(dbUser)){
            CommonException.throwCommonException(ParamEnum.LOGIN_USERNAME_ERROR);

        }
        if (ObjectUtil.equals(dbUser.getStatus(), USER_STATUS_UNNORMAL)){
            CommonException.throwCommonException(ParamEnum.LOGIN_STATUS_ERROR);
        }
        String userPassword = DigestUtils.md5DigestAsHex(dto.getPassword().getBytes());
        String encodedPassword = dbUser.getPassword();
        boolean isChecked = ObjectUtil.equals(userPassword, encodedPassword);
        if (!isChecked){
            CommonException.throwCommonException(ParamEnum.LOGIN_PASSWORD_ERROR);

        }
        Role role = roleMapper.selectById(dbUser.getRoleId());
        Map<String, Object> claims = new HashMap<>();
        claims.put("id", dbUser.getId());
        claims.put("username", dbUser.getUsername());
        return UserLoginVO.builder()
                .id(dbUser.getId())
                .username(dbUser.getUsername())
                .name(dbUser.getName())
                .image(dbUser.getImage())
                .roleLabel(role.getLabel())
                .token(JwtUtils.generateToken(claims))
                .build();

    }

    @Override
    public List<User> listByDept(Integer deptId) {
        return userMapper.selectByDeptId(deptId);
    }

    @Override
    public List<User> listByRole(String roleLabel) {
        // 根据角色label 查询角色表获取角色
        Role role = roleMapper.selectByLabel(roleLabel);
        if (ObjectUtils.isEmpty(role)) {
            throw new RuntimeException("角色不存在");
        }
        return userMapper.selectByRoleId(role.getId());

    }
    @Override
    public void updateUser(User user) {
        user.setUpdateTime(LocalDateTime.now());
        String rawPassword = new StringBuilder(user.getUsername()).append(DEFAULT_PASSWORD_SUFIX).toString();
        String encodedPassword = DigestUtils.md5DigestAsHex(rawPassword.getBytes());
        user.setPassword(encodedPassword);
        userMapper.update(user);
    }

    @Override
    public User getUserById(Integer id) {
        if (Objects.isNull(id)){
            CommonException.throwCommonException(ParamEnum.PARAM_ERROR);
        }
        return userMapper.selectById(id);
    }

    @Override
    public void deleteUsers(List<Integer> ids) {
        boolean isNotEmpty = CollectionUtil.isNotEmpty(ids);
        if (!isNotEmpty){
            CommonException.throwCommonException(ParamEnum.PARAM_ERROR);
        }
        userMapper.deleteByIds(ids);
    }
    @Override
    public void add(User user) {
        boolean hasNull = BeanUtil.hasNullField(user, "id", "password", "roleId", "deptId", "image", "remark", "updateTime", "createTime");
        if (hasNull) {
            CommonException.throwCommonException(ParamEnum.PARAM_ERROR);
        }
        user.setCreateTime(LocalDateTime.now());
        user.setUpdateTime(LocalDateTime.now());
        String rawPassword = new StringBuilder(user.getUsername()).append(DEFAULT_PASSWORD_SUFIX).toString();
        String encodedPassword = DigestUtils.md5DigestAsHex(rawPassword.getBytes());
        user.setPassword(encodedPassword);

        userMapper.insert(user);
    }

    @Override
    public PageResult<UserDO> list(UserDTO dto) {
        PageHelper.startPage(dto.getPage(), dto.getPageSize());
        List<UserDO> result = userMapper.selectByPage(dto);
        // 遍历结果列表，对每个用户的手机号进行隐藏处理
        for (UserDO user : result) {
            if (user.getPhone() != null && !user.getPhone().isEmpty()) {
                // 使用 Hutool 工具类隐藏手机号中间四位
                String hiddenPhone = DesensitizedUtil.mobilePhone(user.getPhone());
                user.setPhone(hiddenPhone);
            }
        }


        Page<UserDO> page = (Page<UserDO>)  result;

        return PageResult.<UserDO>builder()
                .total(page.getTotal())
                .rows(page.getResult())
                .build();
    }
}
